1374236640 has 144 divisors (see below), whose sum is σ = 5359562208. Its totient is φ = 314108928.

The previous prime is 1374236639. The next prime is 1374236641. The reversal of 1374236640 is 466324731.

It is a happy number.

1374236640 is a `hidden beast` number, since 1 + 3 + 7 + 4 + 2 + 3 + 6 + 640 = 666.

1374236640 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1374236639) and next prime (1374236641).

It is a tau number, because it is divible by the number of its divisors (144).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1374236595 and 1374236604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1374236641) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58087 + ... + 78246.

It is an arithmetic number, because the mean of its divisors is an integer number (37219182).

Almost surely, 2^1374236640 is an apocalyptic number.

1374236640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1374236640 is an abundant number, since it is smaller than the sum of its proper divisors (3985325568).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1374236640 is a wasteful number, since it uses less digits than its factorization.

1374236640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136361 (or 136350 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 1374236640 is about 37070.6978623279. The cubic root of 1374236640 is about 1111.7842256835.

The spelling of 1374236640 in words is "one billion, three hundred seventy-four million, two hundred thirty-six thousand, six hundred forty".